I’ve had a lot of book lights over the years and this is the best yet. Rechargeable so no more scrambling for fresh batteries in the middle of a read. Three brightness settings.
Works on every e-ink Kindle I own (3G Keyboards & Touches). Works on print books too and huge clip doubles as a page holder.
Adjustable arm to aim the light no matter where you clip it.
I’ve also used it as a light source in a tent when camping.